The hex color #c9be1f is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#3641E0. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#FCF152, and Hex
#968B00 is the 20% darker color. If the color is saturated by 10%, you get
#CFC314. If the color is desaturated by 10%, the color
#C3B92A is obtained.